Title:
COMMUNICATION METHOD AND DEVICE IN OPTICAL CAMERA COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/006433
Kind Code:
A1
Abstract:
A method of modulating optical camera communication (OCC) signals by an OCC transmission node in an OCC system comprises the steps of: obtaining binary data signals; grouping the binary data signals by k bits, to convert same into a global phase shift signal having an integer value of M-1(=2k-1); on the basis of a predetermined symbol group mapping table, generating a data signal group by mapping the global phase shift signal onto first to M-th mapping sequences in an n*M/2 bit sequence form; modulating the data signal group to generate a pulse signal; and according to the pulse signal, flickering each of a plurality of light sources included in the OCC transmission node. Therefore, the performance of a communication system can be improved.
Inventors:
JANG YEONG MIN (KR)
NGUYEN VAN THANG (KR)
THIEU MINH DUC (KR)
HUY NGOC NGUYEN (KR)
PHAM TUNG LAM (KR)
NGUYEN VAN THANG (KR)
THIEU MINH DUC (KR)
HUY NGOC NGUYEN (KR)
PHAM TUNG LAM (KR)
Application Number:
KR2019/016595
Publication Date:
January 14, 2021
Filing Date:
November 28, 2019
Export Citation:
Assignee:
UNIV KOOKMIN IND ACAD COOP FOUND (KR)
International Classes:
H04B10/67; G06N3/08; H03M13/23; H04B10/116; H04B10/50; H04B10/516; H04B10/548; H04B10/66; H04L25/49; H04L27/18
Attorney, Agent or Firm:
NAM & NAM (KR)
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